Table 1.

Correlation between fecal tumor M2-PK levels and TNM classification or duke's staging

		Median	Mean	SE	Range
Classification	n	(kU/L)	(kU/L)	(kU/L)	(kU/L)
Controls	42	0.8	1.5	0.4	0.1-17.3
T1	5	6.4	4.5	1.6	0.3-7.7
T2	11	10.0	30.5	10.1	1.5-100
T3	25	34.2	106.3	35.2	1.7-620
T4	4	41.7	41.4	19.2	6.6-76
Duke's A	5	6.4	4.5	1.6	0.3-7.7
Duke's B	17	16.5	63.5	34.7	0.2-604
Duke's C	9	40.0	50.0	17.8	1.9-176
Duke's D	10	58.9	138.5	65.3	4.5-620